CN220396528U - Stop valve convenient to adjust velocity of flow - Google Patents

Abstract

The utility model provides a stop valve that is convenient for adjusting the flow rate, including a valve body and a speed regulating mechanism. The speed regulating mechanism includes a shell, a rotating shaft, a driven gear, a speed regulating piece, a driving gear, a toggle plate, a connecting rod and a stop valve. Moving rod, two ends of the valve body are fixedly connected with pipes, a valve stem is installed on the top of the valve body, one end of the pipe is provided with a speed regulating mechanism, and the bottom of the valve body is provided with a moving mechanism. By rotating The toggle plate drives the driving gear to rotate, and the driving gear meshes with the driven gear, and drives the three speed regulating plates to rotate synchronously. According to the different rotation angles of the three speed regulating plates, the size of the gap formed in the middle of the speed regulating plates can be changed. When the flow rate is constant, the flow rate is changed by changing the cross-sectional area of the flow. After the required flow rate is obtained, lower the stop lever and the stop lever will snap into the groove on the dial. The stop lever will limit the rotation of the dial. , to maintain the size of the gap formed at this time, and achieve the effect of controlling the flow rate.

Description

A stop valve that facilitates flow rate adjustment

Technical field

The utility model relates to the technical field related to stop valves, and in particular to a stop valve that is convenient for adjusting flow rate.

Background technique

Globe valve, also known as stop valve, is a forced sealing valve. Therefore, when the valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak. When the medium enters the valve from below the valve disc, the operating force needs to overcome the resistance. , is the friction between the valve stem and the packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so the diameter of the valve stem must be larger, otherwise the valve stem will bend. According to the connection There are three methods: flange connection, threaded connection, and welded connection. After the emergence of self-sealing valves, the medium flow direction of the stop valve is changed from the top of the valve disc into the valve cavity. At this time, under the action of the medium pressure, the valve is closed The force of the valve is small, but the force of opening the valve is large. The diameter of the valve stem can be reduced accordingly. At the same time, under the action of the medium, this form of valve is also tighter. Our country's valve "Three Changes" has stipulated that the flow direction of the stop valve , always use top-down. When the stop valve is opened, the opening height of the valve disc is 25% to 30% of the nominal diameter. The flow rate has reached the maximum, indicating that the valve has reached the fully open position. Therefore, the fully open position of the stop valve should be determined by the row of the valve disc. The opening and closing part of the stop valve is a plug-shaped disc. The sealing surface is a flat or sea cone surface. The valve disc moves linearly along the center line of the valve seat. , the movement form of the valve stem, common name: concealed stem, there is also a lifting and rotating stem type that can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. , Therefore, this type of shut-off globe valve is very suitable for cutting off or regulating and throttling. During use, due to the relatively short opening or closing line of the valve stem of this type of valve, it has a very reliable cutting function. However, the flow rate adjustment function is limited, so there is a special need for a stop valve that facilitates the flow rate adjustment function.

However, most of the existing stop valves that are easy to adjust the flow rate have a relatively short opening or closing line of the valve stem during use, and they have a very reliable cutting function, but for the flow rate, Speed adjustment function is limited.

Utility model content

The purpose of this utility model is to provide a stop valve that is easy to adjust the flow rate, so as to solve the problem of the existing stop valves that are easy to adjust the flow rate proposed in the above background technology. During use, the valve stem of this type of valve opens or closes relative to each other. It is shorter and has a very reliable cut-off function, but has limited function for regulating the flow rate.

In order to achieve the above purpose, the utility model provides a stop valve that is convenient for adjusting the flow rate: it includes a valve body and a speed regulating mechanism, wherein the speed regulating mechanism includes a housing, a rotating shaft, a driven gear, a speed regulating plate, a driving gear, and a dial. , connecting rod and stop rod, the two ends of the valve body are fixedly connected with pipes, the top of the valve body is equipped with a valve stem, one end of the pipe is provided with a speed regulating mechanism, and the bottom of the valve body is provided with a Mobile agency.

Preferably, the speed regulating mechanism includes a shell, a rotating shaft, a driven gear, a speed regulating plate, a driving gear, a toggle plate, a connecting rod and a stop rod. One end of the pipe is fixedly connected to a shell, and the shell is fixedly connected to one end of the pipe. A rotating shaft is rotatably connected to one side surface, a driven gear is fixedly connected to the outer surface of the rotating shaft, a speed regulating plate is fixedly connected to the outer surface of the rotating shaft, a driving gear is engaged with the outer surface of the driven gear, and the driving gear A toggle plate is fixedly connected to the outer surface of the gear, a connecting rod is rotatably connected to the outer surface of the housing, and a stop rod is fixedly connected to one end of the connecting rod.

Preferably, the number of the housings is two, and the rotating shaft is rotatably connected to the housings on both sides.

Preferably, the number of the rotating shafts is three, and they are distributed in an annular shape, the speed regulating plates are on different planes, and the dial is rotationally connected to the housing.

Preferably, the moving mechanism includes a connecting block, a rotating block, a first hinge block, a second hinge block, a base and a universal wheel. The bottom of the valve body is fixedly connected to a connecting block, and the bottom of the connecting block rotates. A rotating block is connected, the bottom of the rotating block is fixedly connected to a first hinge block, the bottom of the first hinge block is hingedly connected to a second hinge block, the bottom of the second hinge block is fixedly connected to a base, the The bottom of the base is fixedly connected with universal wheels.

Preferably, the dimensions of the first hinge block and the second hinge block match.

Preferably, the number of the universal wheels is six, and they are distributed annularly at the bottom of the base.

Compared with the existing technology, the beneficial effects of the present utility model are: the stop valve is convenient for adjusting the flow rate through the shell, rotating shaft, driven gear, speed regulating plate, driving gear, toggle plate, connecting rod and stop rod. Setting, during use, the driving gear is rotated by turning the dial. The driving gear meshes with the driven gear and drives the three speed regulating plates to rotate synchronously. The speed regulation can be changed according to the different rotation angles of the three speed regulating plates. The size of the gap formed in the middle of the piece changes the flow rate by changing the flow cross-sectional area when the flow rate is constant. After obtaining the required flow rate, lower the stop rod and snap it into the groove on the dial. The stop lever will limit the rotation of the dial to maintain the size of the gap formed at this time, thereby achieving the effect of controlling the flow rate.

Description of the drawings

Figure 1 is a schematic side view of the overall structure of the utility model;

Figure 2 is a schematic diagram of the mutual cooperation structure of the housing and the stop lever of the present utility model;

Figure 3 is a schematic diagram of the mutual cooperation structure of the housing and the speed regulating plate of the present utility model;

Figure 4 is a schematic diagram of the mutual cooperation structure of various parts of the moving mechanism of the present utility model.

In the picture: 1. Valve body; 2. Pipe; 3. Valve stem; 4. Speed regulating mechanism; 401. Housing; 402. Rotating shaft; 403. Driven gear; 404. Speed regulating plate; 405. Driving gear; 406. Toggle plate; 407, connecting rod; 408, stop rod; 5, moving mechanism; 501, connecting block; 502, rotating block; 503, first hinge block; 504, second hinge block; 505, base; 506, Universal wheel.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described implementation regulations are only part of the embodiments of the present utility model, rather than the entire implementation. example. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

Please refer to Figures 1-4. The utility model provides a stop valve that is convenient for adjusting the flow rate: it includes a valve body 1 and a speed regulating mechanism 4. The speed regulating mechanism 4 includes a shell 401, a rotating shaft 402, a driven gear 403, a speed regulating mechanism The plate 404, the driving gear 405, the toggle plate 406, the connecting rod 407 and the stop rod 408. The two ends of the valve body 1 are fixedly connected with pipes 2, the top of the valve body 1 is equipped with a valve stem 3, and one end of the pipe 2 is provided with The speed regulating mechanism 4 and the moving mechanism 5 are provided at the bottom of the valve body 1 .

Further, the speed regulating mechanism 4 includes a housing 401, a rotating shaft 402, a driven gear 403, a speed regulating plate 404, a driving gear 405, a dial 406, a connecting rod 407 and a stop rod 408. One end of the pipe 2 is fixedly connected with Shell 401, one side surface of the shell 401 is rotatably connected to a rotating shaft 402, the outer surface of the rotating shaft 402 is fixedly connected to a driven gear 403, the outer surface of the rotating shaft 402 is fixedly connected to a speed regulating plate 404, and the outer surface of the driven gear 403 is meshed with The driving gear 405 has a toggle plate 406 fixedly connected to the outer surface of the driving gear 405, a connecting rod 407 rotatably connected to the outer surface of the housing 401, and a stop rod 408 fixedly connected to one end of the connecting rod 407. Through the housing 401, the rotating shaft 402, The driven gear 403, the speed regulating plate 404, the driving gear 405, the toggle plate 406, the connecting rod 407 and the stop rod 408 are arranged. During use, the driving gear 405 is driven by rotating the toggle plate 406. The driving gear 405 meshes with the driven gear 403 and drives the three speed regulating plates 404 to rotate synchronously. According to the different rotation angles of the three speed regulating plates 404, the size of the gap formed in the middle of the speed regulating plates 404 can be changed. When the flow rate is constant, the gap can be changed. The flow cross-sectional area is changed to change the flow rate. After the required flow rate is obtained, put down the stop lever 408. The stop lever 408 snaps into the groove on the dial 406. The stop lever 408 will limit the rotation of the dial 406. , to maintain the size of the gap formed at this time, and achieve the effect of controlling the flow rate.

Further, the number of housings 401 is two. The rotating shaft 402 is rotationally connected to the housings 401 on both sides. The housing 401 protects the internal parts. The driven gear 403 and the speed regulating plate 404 are fixedly connected to the rotating shaft 402. When the rotating shaft 402 rotates, it drives the driven gear. The gear 403 and the speed regulating plate 404 rotate.

Further, the number of rotating shafts 402 is three and they are distributed in an annular shape. The speed regulating plates 404 are on different planes. The dial 406 is rotationally connected to the housing 401. The three speed regulating plates 404 rotate synchronously. According to the three speed regulating plates 404 Different rotation angles can change the size of the gap formed in the middle of the speed regulating piece 404. The speed regulating piece 404 is on different sides and will not affect each other when rotating.

Further, the moving mechanism 5 includes a connecting block 501, a rotating block 502, a first hinge block 503, a second hinge block 504, a base 505 and a universal wheel 506. The bottom of the valve body 1 is fixedly connected with the connecting block 501. The connecting block The bottom of 501 is rotatably connected to a rotating block 502. The bottom of the rotating block 502 is fixedly connected to a first hinge block 503. The bottom of the first hinge block 503 is hingedly connected to a second hinge block 504. The bottom of the second hinge block 504 is fixedly connected to The base 505 has a universal wheel 506 fixedly connected to the bottom of the base 505. Through the settings of the connecting block 501, the rotating block 502, the first hinge block 503, the second hinge block 504, the base 505 and the universal wheel 506, during use , after supporting the valve body 1, it can move through the universal wheel 506 at the bottom. The universal wheel 506 is installed on the base 505. The base is hinged with the rotating block 502 through the first hinge block 503 and the second hinge block 504. It can do certain things. The angle of rotation can be stowed away when not in use, reducing the floor space. The rotating block 502 is connected to the connecting block 501 for rotation. When the base 505 is stowed, the position of the base 505 can be changed by rotating the rotating block 502 again.

Further, the sizes of the first hinge block 503 and the second hinge block 504 match. The base is hinged with the rotation block 502 through the first hinge block 503 and the second hinge block 504, and can rotate at a certain angle.

Furthermore, the number of universal wheels 506 is six, and they are distributed in an annular shape at the bottom of the base 505. After the valve body 1 is supported, it can be moved through the universal wheels 506 at the bottom, which is convenient for use.

Working principle: A stop valve that is convenient for adjusting the flow rate, including a valve body 1 and a speed regulating mechanism 4. Pipes 2 are fixedly connected to both ends of the valve body 1. A valve stem 3 is installed on the top of the valve body 1. One end of the pipe 2 is provided There is a speed regulating mechanism 4, and a moving mechanism 5 is provided at the bottom of the valve body 1. The speed regulating mechanism 4 includes a housing 401, a rotating shaft 402, a driven gear 403, a speed regulating plate 404, a driving gear 405, a toggle plate 406, and a connecting rod. 407 and stop lever 408, during use, the driving gear 405 is driven to rotate by rotating the dial 406. The driving gear 405 meshes with the driven gear 403, and drives the three speed regulating plates 404 to rotate synchronously. According to the three adjustment Different rotation angles of the speed plate 404 can change the size of the gap formed in the middle of the speed plate 404. When the flow rate is constant, the flow rate can be changed by changing the flow cross-sectional area. After the required flow rate is obtained, lower the stop lever 408 to stop the flow. The moving rod 408 snaps into the groove on the toggle plate 406, and the stop rod 408 will limit the rotation of the toggle plate 406 to maintain the size of the gap formed at this time, thereby achieving the effect of controlling the flow rate. The outer shell 401 protects the internal parts. The driven gear 403 and the speed regulating plate 404 are fixedly connected to the rotating shaft 402. When the rotating shaft 402 rotates, the driven gear 403 and the speed regulating plate 404 are driven to rotate. The three speed regulating plates 404 rotate synchronously. According to the rotation angle of the three speed regulating plates 404 The size of the gap formed in the middle of the speed regulating piece 404 can be changed. The speed regulating piece 404 is on different sides and will not affect each other when rotating. The moving mechanism 5 includes a connecting block 501, a rotating block 502, and a first hinge block 503. , the second hinge block 504, the base 505 and the universal wheel 506. During use, the valve body 1 can be moved through the universal wheel 506 at the bottom after being supported. The universal wheel 506 is installed on the base 505, and the base passes through the third The first hinge block 503 and the second hinge block 504 are hinged with the rotating block 502, and can rotate at a certain angle. When not in use, they can be stowed away to reduce the floor space. The rotating block 502 is rotationally connected with the connecting block 501. When the base 505 After being folded, the position of the base 505 can be changed by rotating the rotating block 502 again, thereby completing a stop valve that is convenient for adjusting the flow rate.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention. , substitutions and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. A stop valve that is convenient for adjusting flow rate, including a valve body (1) and a speed regulating mechanism (4), wherein the speed regulating mechanism (4) includes a housing (401), a rotating shaft (402), and a driven gear (403) , speed regulating plate (404), driving gear (405), toggle plate (406), connecting rod (407) and stop rod (408), characterized in that: the two ends of the valve body (1) are fixedly connected There is a pipeline (2), a valve stem (3) is installed on the top of the valve body (1), a speed regulating mechanism (4) is provided on one end of the pipeline (2), and a speed regulating mechanism (4) is provided on the bottom of the valve body (1). There is a moving mechanism (5). 2. A stop valve convenient for adjusting flow rate according to claim 1, characterized in that: the speed regulating mechanism (4) includes a housing (401), a rotating shaft (402), a driven gear (403), an adjusting Speed plate (404), driving gear (405), toggle plate (406), connecting rod (407) and stop rod (408). One end of the pipe (2) is fixedly connected with a shell (401). A rotating shaft (402) is rotatably connected to one side surface of the housing (401), a driven gear (403) is fixedly connected to the outer surface of the rotating shaft (402), and a speed regulating plate is fixedly connected to the outer surface of the rotating shaft (402). (404), the outer surface of the driven gear (403) is engaged with the driving gear (405), the outer surface of the driving gear (405) is fixedly connected with the dial (406), and the outer surface of the housing (401) A connecting rod (407) is rotatably connected to the outer surface, and a stop rod (408) is fixedly connected to one end of the connecting rod (407). 3. A stop valve convenient for adjusting flow rate according to claim 2, characterized in that: the number of the housings (401) is two, and the rotating shaft (402) is rotatably connected to the housings (401) on both sides. . 4. A stop valve convenient for adjusting the flow rate according to claim 2, characterized in that: the number of the rotating shafts (402) is three, and they are annularly distributed, and the speed regulating plates (404) are on different planes. , the dial (406) is rotationally connected to the housing (401). 5. A stop valve convenient for adjusting flow rate according to claim 1, characterized in that: the moving mechanism (5) includes a connecting block (501), a rotating block (502), and a first hinge block (503) , the second hinge block (504), the base (505) and the universal wheel (506). The bottom of the valve body (1) is fixedly connected with a connecting block (501), and the bottom of the connecting block (501) is rotationally connected. There is a rotating block (502), a first hinge block (503) is fixedly connected to the bottom of the rotating block (502), and a second hinge block (504) is hingedly connected to the bottom of the first hinge block (503), so A base (505) is fixedly connected to the bottom of the second hinge block (504), and a universal wheel (506) is fixedly connected to the bottom of the base (505). 6. A stop valve convenient for adjusting flow rate according to claim 5, characterized in that the size of the first hinge block (503) and the second hinge block (504) match. 7. A stop valve convenient for adjusting flow rate according to claim 5, characterized in that: the number of said universal wheels (506) is six, and they are distributed annularly at the bottom of the base (505).